Window-lock.



J. w. WEIDENMULLER.

WINDOW LOCK. APPLICATION FILED APR. 10. 1915 1,201,662. Patented Oct. 17,1916.

JULIUS W. WEIDENMULLE R, OF NEW YORK, N. Y.

WINDOW-LOCK.

Specification of Letters Patent.

Patented Oct. 17, 1916.

Application filed April 10, 1916. Serial No. 90,096.

To all whom it may concern Be it known that I, JULIUS W. VVEIDEN- MULLER, a citizen of the United States, and resident of New York, borough of Bronx, in the county of Bronx and State of New York, have invented certainnew and useful Improvements in WVindow Locks, of which the following is a specification.

This invention relates to certain improvements in window locks and more particularly to that type in which the two sashes have cooperating members adapted to be locked in a plurality of adjusted positions to hold both sashes closed or' either sash open to the desired extent.

As important features of my improved construction, I so design the parts that they may readily be attached to windows already in use and without cutting or defacing the sashes except by the insertion of the necessary retaining screws; one of the members is movable to inoperative position so that the window may be readily opened or closed without any interference from the device; the locking bolt is movable in a direction parallel to the plane of the Window so that it can not be disengaged by prying on the window, and a guard prevents access to the locking bolt from above.

In the accompanying drawings, to which reference is to be had and on which similar reference characters indicate corresponding parts in the several views, I have shown one embodiment of my invention, but I do not desire to be limited to the specific construction there shown as various changes may be made within the spirit of my invention and without departing from the scope of the appended claims.

In these drawings,

Figure 1 is a face view of portions of two window sashes with my improved device applied thereto, a portion of one of the members being broken away; Fig. 2 is a side elevation of the device, the sashes being shown in section on the line 2 -2 of Fig. 1; Fig. 3 is a top plan view, the upper sash being shown in section; Fig. 4 is a face view of the bolt carrying arm; and Fig. 5 is a section on the line 55 of Fig. 1.

My improved construction in the specific form illustrated is adapted for use in looking together two window sashes 10 and 11 so as to hold both in closed position or to hold either of them open to any desired extent. As illustrated, the upper sash is pro- The strip may extend the full height ofv the sash, although in ordinary practice it is not necessary or desirable to extend up only part way. As shown, it has three separate sockets l3 and is of six to eight inches in length. It is of course evident that I do not desire to be limited to this length or this number of bolt receiving sockets.-'

The lower sash 10 carries an arm supporting member having the base portion 15 resting on the upper edge of the sash, a lug 16 engaging with the front surface of the sash and two spaced lugs 17 17 extending upwardly from and formed integral with the base portion. Pivotally supported between these two lugs and on a suitable pivot, bolt, or rivet 18, is an arm 19" having at its upper end a cylindrical extension 20 constituting a support for a locking bolt 21. This bolt is mountedto move in a horizontal di-- rection and parallel to the plane of the glass, and the member is so supportedon the lower sash that the end of the tubular portion 20 comes adjacent to the outer surface 'of the strip 12. The strip is so positioned and the arm 19 is of such length that when both sashes are closed, the locking bolt will come opposite the lower socket or aperture 13 and may enter the latter to prevent relative movement of the sashes.

Encirclingthe bolt, I provide a coil spring 22 engaging with suitable stops on the bolt and its support and tending to press the bolt out to locking position. The rear end of the bolt is exposed so that it will serve as a handle to pull the bolt back against the action of the spring, and it is provided with a suitable removable stop 23 to'limit the extent to which'the bolt may be moved by the spring.

Extending above and curvingaround on each side of the rear end of the bolt is a flange on guard 21 preferably formed in tegral with the arm and of a length slightly greater than the length of the exposed or handle portion of the bolt. Thus, a person cannot gain access to the handle portion of the bolt to withdraw it except from beneath or at the end of the guard. If the window be locked in partially'open position with the locking bolt in one of the upper apertures of the strip, a person cannot reach through above the upper sash and pull back the bolt as the guard prevents him from gaining ac cess to it. a The bolt can only be withdrawn by a person grasping it from below and at the end of the guard.

When it is not desired to lock the window, the locking bolt may be withdrawn and the arm and bolt swung from the position shown in solid lines in Fig. 2 through the position indicated in dotted lines until it rests on the upper surface of the base. Either sash may then be freely moved.

It will be noted that in applying the de vice to a window, it is not necessary to cut or in any way specially adapt the sashes and that the only labor involved in applying it is that needed to put in the several screws.

The device is very simple in construction, inexpensive to manufacture and when in position, positively locks the sashes against relative movement.

Having thus described my invention, what I claim as new and desire to secure by Lettel-s Patent is:

1. A window lock including a strip adapted to be secured to the edge of the upper sash adjacent to the glass and having a series of bolt receiving sockets therein, a supporting member secured to the upper surface of the lower sash, an arm pivoted to said supporting member, and a locking bolt carried by said arm and movable in a direction parallel to the plane of the window and adapted to enter any one of the sockets of said strip.

. 2. A window lock including a strip adapt ed to be secured to the edge of the upper sash adjacent to the glass and having a series of bolt receiving sockets therein, a supporting member secured to the upper surface of the lower sash, an arm pivoted to said supporting member, a locking bolt carried by said arm and movable in a direction parallel to the plane of the window and adapted to enter any one of the sockets of said strip, a spring normally pressing said bolt toward operative position, a handle for withdrawing said bolt, and a guard extendmg above said handle and preventing access thereto from above.

3. A window lock including a strip adapted to be secured to the edge of the upper sash adjacent to the glass and having a series of bolt receiving sockets therein, a supporting member secured to the upper surface of the lower sash, an arm pivoted to said supporting member, a locking bolt carried by said arm and movable in a direction parallel to the plane of the window and adapted to enter any one of the sockets of said strip, a spring normally pressing said bolt toward operative position, a ban dle for withdrawing said bolt and a curved plate carried by said arm and partially encircling said handle to constitute a guard and to prevent access to said handle from above.

Signed at New York, in the county of New York and State of New York, this 8th day of April, A. D. 1916.

JULIUS W. WEIDEN MULLER.

WVitnesses:

C. W. VVIMBERLY, CYRIL DE WYRALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

